SG33401A1 - A process for the manufacture of paraformaldehyde - Google Patents

A process for the manufacture of paraformaldehyde

Info

Publication number
SG33401A1
SG33401A1 SG1995000805A SG1995000805A SG33401A1 SG 33401 A1 SG33401 A1 SG 33401A1 SG 1995000805 A SG1995000805 A SG 1995000805A SG 1995000805 A SG1995000805 A SG 1995000805A SG 33401 A1 SG33401 A1 SG 33401A1
Authority
SG
Singapore
Prior art keywords
solution
zones
heated
paraformaldehyde
manufacture
Prior art date
Application number
SG1995000805A
Inventor
Luis Eek-Vancells
Original Assignee
Patentes Y Novadades S L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patentes Y Novadades S L filed Critical Patentes Y Novadades S L
Priority to SG1995000805A priority Critical patent/SG33401A1/en
Publication of SG33401A1 publication Critical patent/SG33401A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
    • C07C47/04—Formaldehyde
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/08—Polymerisation of formaldehyde

Abstract

The process comprises providing a formaldehyde solution at a concentration of 80-89 %; heating the solution to a temperature of 80-100 DEG C; pouring the heated solution over heated zones on a metal belt conveyor travelling from the heated zones to other, chilled zones. The formaldehyde solution is preferably previously mixed with a catalyst.
SG1995000805A 1994-12-09 1995-07-05 A process for the manufacture of paraformaldehyde SG33401A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG1995000805A SG33401A1 (en) 1994-12-09 1995-07-05 A process for the manufacture of paraformaldehyde

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES09402512A ES2087041B1 (en) 1994-12-09 1994-12-09 PROCEDURE FOR THE PREPARATION OF PARAFORMALDEHYDE.
SG1995000805A SG33401A1 (en) 1994-12-09 1995-07-05 A process for the manufacture of paraformaldehyde

Publications (1)

Publication Number Publication Date
SG33401A1 true SG33401A1 (en) 1996-10-18

Family

ID=8288212

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1995000805A SG33401A1 (en) 1994-12-09 1995-07-05 A process for the manufacture of paraformaldehyde

Country Status (29)

Country Link
US (1) US5686554A (en)
EP (1) EP0716104B1 (en)
JP (1) JP2796669B2 (en)
KR (1) KR100249275B1 (en)
CN (1) CN1061641C (en)
AT (1) ATE193308T1 (en)
AU (1) AU695649B2 (en)
CA (1) CA2153452C (en)
CZ (1) CZ288105B6 (en)
DE (1) DE69517138T2 (en)
EE (1) EE03254B1 (en)
ES (1) ES2087041B1 (en)
FI (1) FI113780B (en)
GR (1) GR3034085T3 (en)
HR (1) HRP950396B1 (en)
HU (1) HU214094B (en)
MX (1) MX192468A (en)
NO (1) NO307383B1 (en)
NZ (1) NZ272534A (en)
PL (1) PL179331B1 (en)
PT (1) PT716104E (en)
RU (1) RU2148592C1 (en)
SA (1) SA95160120B1 (en)
SG (1) SG33401A1 (en)
TH (1) TH12621A (en)
TW (1) TW285666B (en)
UA (1) UA44697C2 (en)
VN (1) VN498A1 (en)
YU (1) YU48905B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2153661T3 (en) * 1996-03-20 2001-03-01 Celanese Int Corp ADDITION OF AMINA TO IMPROVE PARFORMALDEHYDE.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001235A (en) * 1958-07-26 1961-09-26 Sumitomo Chemical Co Method for the manufacture of a formaldehyde polymer in a crape-chip form
US2992277A (en) 1959-04-28 1961-07-11 Du Pont Paraformaldehyde manufacture
ES341724A1 (en) * 1967-06-13 1968-10-01 Ordieres Improvements introduced in procedures for polymerization of formaldehyde solutions. (Machine-translation by Google Translate, not legally binding)
FR1547172A (en) * 1967-07-17 1968-11-22 Sir Soc Italiana Resine Spa Paraformaldehyde production process
FR2067169A1 (en) * 1969-11-19 1971-08-20 Charbonnages Ste Chimique Paraformaldehyde from aq formaldehyde
US4550213A (en) 1984-06-29 1985-10-29 Celanese Corporation Method of manufacture for paraformaldehyde prills
DE3925966A1 (en) 1989-08-05 1991-02-07 Leuna Werke Veb Para-formaldehyde] granules prodn.
CN1029351C (en) 1989-09-16 1995-07-19 陈方 Making method for polymer formol with high content of formol
US5302277A (en) * 1990-11-28 1994-04-12 Mitsui Toatsu Chemicals, Incorporated Process for producing paraformaldehyde of high formaldehyde content

Also Published As

Publication number Publication date
CN1124242A (en) 1996-06-12
HUT75584A (en) 1997-05-28
CN1061641C (en) 2001-02-07
HU9502048D0 (en) 1995-09-28
EP0716104A1 (en) 1996-06-12
NO307383B1 (en) 2000-03-27
TH12621A (en) 1996-09-10
HU214094B (en) 1997-12-29
DE69517138T2 (en) 2001-02-01
RU2148592C1 (en) 2000-05-10
EP0716104B1 (en) 2000-05-24
PL179331B1 (en) 2000-08-31
HRP950396B1 (en) 2001-02-28
NO952691L (en) 1996-06-10
CA2153452A1 (en) 1996-06-10
SA95160120B1 (en) 2005-05-16
CZ243995A3 (en) 1996-06-12
NO952691D0 (en) 1995-07-06
FI113780B (en) 2004-06-15
ES2087041A1 (en) 1996-07-01
KR100249275B1 (en) 2000-03-15
PL310573A1 (en) 1996-06-10
AU695649B2 (en) 1998-08-20
CA2153452C (en) 2006-08-29
EE03254B1 (en) 2000-02-15
KR960022425A (en) 1996-07-18
ES2087041B1 (en) 1997-03-16
MX192468B (en) 2016-01-29
US5686554A (en) 1997-11-11
UA44697C2 (en) 2002-03-15
HRP950396A2 (en) 1997-10-31
JP2796669B2 (en) 1998-09-10
YU54395A (en) 1997-12-05
MX192468A (en) 1999-06-24
VN498A1 (en) 1998-05-25
TW285666B (en) 1996-09-11
NZ272534A (en) 1996-03-26
FI953683A (en) 1996-06-10
DE69517138D1 (en) 2000-06-29
PT716104E (en) 2000-11-30
ATE193308T1 (en) 2000-06-15
FI953683A0 (en) 1995-08-02
YU48905B (en) 2002-10-18
CZ288105B6 (en) 2001-04-11
AU2496095A (en) 1996-06-20
GR3034085T3 (en) 2000-11-30
JPH08165262A (en) 1996-06-25

Similar Documents

Publication Publication Date Title
SG110192G (en) Low termperature glass composition,paste and method of use
HU911970D0 (en) Process for the production of 4-acetoxystrene derivatives
DE3665186D1 (en) Process for the fabrication of aromatic polyamides
SG33401A1 (en) A process for the manufacture of paraformaldehyde
FR2739098B1 (en) PROCESS FOR ACYLATION OF AN AROMATIC COMPOUND
MY118480A (en) A process for the manufacture of paraformaldehyde
SG117392G (en) Mercaptoalkyl acetoacetates,use thereof and a process for the preparation of mercaptoalkyl acetoacetates
DE59206398D1 (en) Process for the preparation of 1-carbamoyl-pyrazoles
AU582025B2 (en) Process of carrying out high-temperature reactions
SE8201021L (en) METHOD OF PREPARING DEXTRAN
Enyingi The Effect of Chemical Composition on the Time Required for Heat Treatment of Ferritic Malleable Cast Iron
GEP19970971B (en) A Process for Manufacture of Paraformaldehyde
TH12621B (en) "Process for the manufacture of para-formaldehyde"
TH20458A (en) "Process for the production of para-formaldehyde"
ES8507166A1 (en) Process for the preparation of a polytriazine